Pumping apparatus.



.. T. WIEDEMANN & J. H. TEMPLIN.

PUNIPNG APPARATUS.

APPLICATION meu 1AN.5.1912.

1 ,206,63 1'.. I Patented Nov. 28, 1916.

and

'.l'HEDOEE AND JOSEPH H. FIEIIPLIN, 0F PHHJADELPHEA, PENNSYL- VANI, .hSSGNOBS, BY MESH 1E ASSGNMENTS, T0 GENERAL ELEGTRICCOMPMY,

n convenanten or new velan.,

Erniurine nrrnnarns.

naoaeai.

Specification of Letters Eatent.

retreated not. as, raie.

.application filed aan-nary 5, 1912. Serial 1t o. 639,55.

5 State oi Pennsylvania, have invented certain.f

new and useful improvements in Pumping Apparatus, whereoi the following is a specihcation, reference being had to the accompanying drawings.

.'lhe invention relates to a pumpinglapparatus for a vacuum cleaner, and more especially to the actuating means for the reciprocating diaphragm ci the pump.

.dn object of the invention is to provide devices tor guiding the pumping member during its reciprocation, whereby the same is caused to travel in a longitudinal path, which guiding means' also limits and conl, trois the oscillations ot said pumping memoer.

' lin the accompanying drawings which show by way of illustration one embodiment ofthe invention, Figure l, is asectional elevation of a pumping mechanism embodying my invention. lFig. lli, is a side elevation oit my improved guiding member for the reciprocating f diaphragm. Fig. 11i, is a similar view, showing a modified form oi' the invention. Fig. 1V, isa side view ot a s@ part of the construction shown in Fig. 111.

'lihe invention asherein illustrated. is shown as applied to a well known type of pumping apparatus, employed for vacuum cleaning purposes. Said apparatus consists of a casing 1, having a supporting base to which is secured any desired number of standards EZ, having the upper portions theref of of a reduced diameter, as indicated at 3. Located on the reduced part of the standards 2, are springs 1, and 5, between which is interposed the casing of the pump A6. Threaded on the upper ends of the standards are nuts 7, and the springs 5, bear against said nuts. By this construction, the pump 6, is resiliently supported. rlhev pump 6, comprising an upper casing 8, having a flange 9, an annulus 10, provided with a Harige 11, and a flexible reciprocating pumping member or diaphragm 12, the outer pe-l riphery of which is secured between the llanges 9, and 11, vby suitable fastening devices 13. The diaphragm 12, is formed with apertures 16, and a plate 14, having apertures 15, staggered relative'to the apertures 16, is secured to theunder side ot said diaphragm 12. The movement of the eirible diaphragm is limited byan apertured memiber 17, which memberis secured in'position by the fastening devices 18. The fastening devices 18, pass through the plate 1li, diaphragm 12, andthe washer 19, and are secured to the brackets or hangers 20. The central portions of the valve members and the member 17, are heldin proper relation to each other by a central fastening de# vice '21.

'lhe brackets or hangers 20, are provided with pins 22, 23, and 24, which pins 22, and 2d, pass through the guide member 25, whereby said guide member is held nonrotatable with respect to the hangersO. rlhe guide member 25, is dedected outwardly and downwardly, as indicated at 26,- whereby the same is capable of a vertically lreciprocating movement, without striking the motor shaft 27, which is operated by the motor 28. rlhe lower end ot the guide member 25, is deliected inwardly and downwardly, and is pivotally connected at 29, to one end oie the link 30. Said linlr 30, is pivoted at 31, to a suitable red bracket carried ,by the base of the casing 1l A connecting rod 32,.

cooperates with a suitable eccentric 33, on the motor shaft 27, and is pivoted at its upper end to a pin 23.

ln the drawings, we have shown the pumping member as actuated by two connecting rods, but it will be understood that from certain aspects oi the invention, a single connecting rod might be used.. We have also shown the motor shaft as provided with suitable vbala'uuce wheels 3d. rl`he base ont' the motor is provided with an extension 36, which carries a buiier 35, and this buder cooperates with the walls of a recess in the base of the cleaner, to prevent any material vibration of the pump on its supporting mechanism.

The pump 6, is provided with an inlet 37,

`which is controlled by a suitable valve which members 40, 41, and 42. rlhis valve mechai' nism issecured to the pump casing by fastening devices 44, which pass through an anw nulus 45, having a flange 46. Washers-'47, are interposed between the valve member 41,

- vand the screen 42, in orderto providefor the requisite amount of movement of the exible valve member 41.v Y

In the embodiment of the invention as shown in Figs. lll, and 1V, the guiding member is not deflected as in the construetion shown in Figs. l, and ll, but is formed with a slot 48, through which the motor -ily laterally. guiding member 25, travels in an arc which l land thus vibrate the pumping member, or

diaphragm. The operation of the valves inthe pumping member and also the valve mechanism controlling the inlet to the pump, is obvious. Owing'to the guiding rod 2:6-,l

and the manner in which it is secured to the hangers 30, the follower head or pumping member, instead oi having imparted thereto a combined oscillatory and reciprocatory movement, Awill be reciprocated bod- The pivotal point 29, of the is of little curvature, and which extends substantially vertically. ln other words, the rigid connection between the gulding member 25, andthe pumping member, will cause the pumping member to move bodily laterally, with little or no oscillatlon, and

i the pivotal connection between the connectingrods and the hangers allows this bodily lateral movement. j

1n the construction shown in Figs. lll,-

and IV, the guiding lmember through itsl sliding connection with the journal boX sur- A rounding the shaft, will also cause the pumping member to move bodily laterally, without oscillation.

While we have shown and described in delations oi' the hangers.

incassi tail' a, pumping mechanism and actuating means therefor, it will be understood that the invention in its broadest aspect, -isnot limited to the specilic mechanism herein shown, but that our improved guiding means for the pumping member, may be applied to' various types of pumping mechanism, and actuating devices therefor. o l

' Having thus described our invention, we claim:- 1 1. A vacuum cleaner including in combination, a diaphragm pumping member having j a valve located centrally thereof; hangers vsecured tol the diaphragm; means lfor engaging the hangers for reciprocating the said hangers; and means coperating with the-guiding membersfor preventing oscil- 2. A vacuum cleaner including in .combination, a diaphragm pumping member having va valve located centrallyh thereof; hangersconnec'ted to said diaphragm; guiding members secured to the'hangers; connecting rods pivotally connected. to' the hangers; means foroperating the connecting rods tor reciprocating the diaphragm; guiding members connected with the hangers; and 'means"cooperating` with the'guiding members 'for causing the hangers in the central vportion of the diaphragm to move bodily laterally, without oscillation.

3. A vacuum cleaner including in combination, a pumping member having a centra-l bodily moving' portion; hangers connected therewith; connectingv rods' pivoted to said hangers; means for actuating the diaphragm; guiding members connected to connecting rods; guiding members rigidly connected to the hangers; and devices cooperating with the guiding members for causing said central portionto move bodily laterally, without oscillation.

ln testimony whereof, We have hereunto signed our names at Philadelphia, lennsyIVania, this third dav odanuary, 1912.

THEDORE WllEDEMANN.-

JOSEPH l-l. TEMPLlN;

Witnesses:

JAMES H. BELL, E." L. Tmnnnron. 

